- Had or were suspected for immune function disorders; had previously received or were suspected to receive the immunosuppressive therapy; or had received the immunosuppressive therapy within 30 days prior to participating in the study (including systemic corticosteroids or inhalation corticosteroids) (However, it was not the exclusion criteria to have received corticosteroid therapy (prednisolone equivalent ≤ 0.5 mg/kg/day) not more than for 14 consecutive days at least 30 days before their participation in the study).